Adjustable releasing device



July 10, 1928.

o. E. wlL'rslE ADJUSTABLE RELEASING DEVICE Filed July 1l, 1927 INVENTOR.

I ATTORNEY.

15 ceeded. held, two jaws pivoted to an eyebolt carrying Patented July 10, 192e. 1,677,009

UNITI-:D sTATEsPATl-:NT OFFICE.

ADJUSTABLE RELEASING DEVICE.

Application med July 11, 1927. seriai No.` 204,940.

My invention relates to a device for mov- Figure 1 isa side elevation, partly in secing or pulling some object, which device is tion of the device. `fixed to the moving mechanism, the Vsaid de- Figure 2 is an isometric View of the 55 vice automatically releasing lthe attaching bracket. f

5 means when the pulling force exceeds What- Figure 3 is anisometric View of the cylinever predetermined force the; said device is derf i adjusted to and this invention refers more Figure 4 is aside elevation of the jaws particularlyrto the utilizationof the same` in and eyebolt in an extendedposition.' V60 releasing trailers from tractors. 1 Figure 5 is an isometric view of the flanged One object ofmy invention is to provide circularly ribbed nut. f

a device that will release, uniformly around Figure 6 is a plan View of the jaws and the `horizontal plane 4of said device, a means eyebolt in the closed position. attachable thereto and to an object tobe The device comprises a bracket, to which `65 moved, when a predetermined pressure is ex- I is rigidly bolted a cylinder, within which are Another object of m invention is to proa flanged nut with a circularly arranged rib vide a device,automatically releasing an atthereon. locating' and guiding two springs i tachingfmeans when a predetermined force adapted t0 force the eyebolt together with `70 is exceeded, that will operate a mechanism the said jaws into an opening in one end of or perform some function at a point remote the said cylinder', thus holding the pivoted from the said device. jaws together within the said opening by a A still further object of my invention `is to force dependent upon and governed by the f provide a device, rigidly fixa-ble to a motor position of the nut upon the eyebolt 75 driven mechanism, which device contains the The bracket 1, with a rectangulalbilsc 2, minimum number of moving parts and after Dloyided With bolt holes 3, has a boss 4, a functioning, reaoljusts itself automatically semlcircular extension 5, and two arms 6 and for another Operation, f l l 7, each With a rib 8, and bOl lOleS 9.

It is well known inthe art that releasing Bolted firmly to this bracket 1, isa cylin- 80 devices, clevises, automatic releasecouplings, der 10, having an opening 11, formed by the 3o safety tractor bitches and the like have been inwardly projecting portion 12, provided used but none of them contemplate the with a beveled edge 13, and on the outside of unique combination of novel elements uti- Vthis cylinder are two bosses 14 and 15, with lized in this particular device which incorboltholes 16, into which are screwed the cap 35 porates the minimum number of elements screws 17, as shown in Figure 1, holding the possible to release uniformly around a hori- .bracket V1, and the cylinder 10, firmly tozontal plane ot' the device, any attachable gather. Y means cooperating with and between a prime Into this opening 11, there is slidable, an mover and an object to be moved. eyebolt 18, with a flattened eye 19, carrying 9o This invention is an improvement upon a pivot 20, pivoting two jaws 21 and 22, 40 the application filed December 23, 1920, Semovably holding the said jaws positioned rial Number 432,681, upon which one claim each side of the eye 19.

was allowed but as the case Was not prose- Each jaw comprises half an eye 23, with a cuted within the time prescribed the case was boss 24 thereon, a bevelled portion 25, a half 9b declared abandoned. round portion 26, also each of the sald jaws With these and other objects in view, my are split diagonally, as shown in Figure 5, invention consists of the novel construction, by 27 so that each jaw will include a half arrangement and formation of parts, hereineye 23. after referred to and described, claimed and Into either one or both of the bosses 24, substantially as illustrated in the accomof the jaws 21 and 22, may be screwed the 5 0 panying drawings, wherein similar numerals shouldered eye stud 29, having a flattened refer to like parts throughout the several eye 30, into which may be fastened a rope, views, in which: wire, or the like 31, adapted to be attached return to any object it may be desirable to move at some point remote from the device for some useful purpose.

The eyebolt 18, with thejaws 21 and 22, pivoted thereto by the pivot 20, has anut 32,

adjustable thereon by the thread 33, and.

this nut with the hexagon head 34, flanged at 35, has a circular rib 3G, which separates and positions the springs 37 and 38.l

When the eyebolt. together with the pivoted jaws are pushed intothe hole 11, the spring 38, is placed into position against the party 12, the spring 37, is placed in position against the end of the cylinder' at 39, and' the nut 3Q, is screwed on, the other ends o the springs 37 and 38, being positioned, guided and held apart by the circular rib 36, on the flange 35, and it is obvious thatany desirable pressure may be obtainedk within the limits of the two springs by adjusting this nut 32, upon the eyebolt 18.

Normally the spring pressure will hold the said jaws and eyebolt within the4 hole 11, against the bevelled surface 13, until a force greater" than the spring pressure is placed upon these parts, by the rope or attaching `means 40, whereupon the jaws and eyebolt `do not wish to limit ymyself to the exact construction shown, as modifications may be made therein without departing from the spirit of the invention or scope of the claims.

I claim 1. An automatic adjustable releasing device comprising a` bracket, attachable to a moving mechanism, rigidly holding a cylinder, an eyebolt carrying a pivot, holding two shoulderedk jaws thereon, a relativelyr heavy outer and light inner Spring engaging one end of the said cylinder and a ianged circularly ribbed nut, adj ustablyheld upon the said eyebolt.

2. The combination with an automatic adjustable releasing device, of a rigidly supported bracket and cylinder, an eyebolt pivotally carrying two jaws and a flanged cir cularly ribbed nut engaging two coaxial springs `and the springs engaging the end ot said cylinder and means directing the said jaws to open uniformly each side ot the horizontal plane of the said device upon the application ot a. force exceeding that of the said springs.

3. The combination with an automatic adjustable releasing device, of a rigidly sup ported bracket and cylinder, an eyebolt pivotally carrying two jaws, each provided with meanstor moving an object at some remote lpoint, -and a ianged circularly ribbed adjustable nut engaging two coaxial springs and the springs engaging the end of the said cylinder and means directing the said jaws 'to open uniformly each side the horizontal centerline of the said device upon the application of a force exceeding that oi the said springs.

4. The combination with an automatic adjustable releasing device, ot a bracket and cylinder with means for rigidly attaching to a moving mechanism, an eyebolt pivotally carrying a pair of interengaging jaw members with attaching means therenn, adapted to be held in a closed position by adjustable spring means and to fit within means integral with the said cylinder, said means directing the jaw members to open uniformly around the horizontal plane of the said device upon the application of a force in excess to that of the said spring means and means attachable to the said jaw or jaws for moving an object atlsome remote point.

Signed at Troy, N. Y.. 1n the county of Rensselaer, and State of New York, this 7th day of'July, 1927.

i OLIVER ERNEST wiLTsm. 

